From f2d14ca78fd127dcc62b2ed9793743ea74fe0dad Mon Sep 17 00:00:00 2001
From: Alexander Zinchuk <alx.zinchuk@gmail.com>
Date: Wed, 4 Jun 2025 20:41:25 +0200
Subject: [PATCH] Manage Discussion: Fix creating new linked chat in channels
 (#5958)

Co-authored-by: zubiden <19638254+zubiden@users.noreply.github.com>
---
 src/api/gramjs/methods/chats.ts               |  24 ++-
 src/assets/localization/fallback.strings      |   2 +
 src/components/left/main/ContactList.tsx      |   1 -
 src/components/left/newChat/NewChatStep2.tsx  |   1 +
 src/components/right/RightColumn.tsx          |   3 +
 src/components/right/RightHeader.scss         |   2 +-
 src/components/right/RightHeader.tsx          |   5 +
 .../right/management/ManageDiscussion.tsx     |  10 +-
 .../right/management/ManageInvites.tsx        |   2 +-
 .../right/management/Management.scss          |   9 +-
 .../right/management/Management.tsx           |  11 ++
 .../right/management/NewDiscussionGroup.tsx   | 142 ++++++++++++++++++
 src/global/actions/api/chats.ts               |  22 ++-
 src/global/types/actions.ts                   |   7 +-
 src/types/index.ts                            |   2 +
 src/types/language.d.ts                       |   3 +
 16 files changed, 229 insertions(+), 17 deletions(-)
 create mode 100644 src/components/right/management/NewDiscussionGroup.tsx

diff --git a/src/api/gramjs/methods/chats.ts b/src/api/gramjs/methods/chats.ts
index ab1c75363..88f949eaa 100644
--- a/src/api/gramjs/methods/chats.ts
+++ b/src/api/gramjs/methods/chats.ts
@@ -347,14 +347,27 @@ export async function fetchSavedChats({
   };
 }
 
-export function fetchFullChat(chat: ApiChat) {
+const fullChatRequestDedupe = new Map<string, Promise<FullChatData | undefined>>();
+export async function fetchFullChat(chat: ApiChat) {
   const { id } = chat;
 
+  if (fullChatRequestDedupe.has(id)) {
+    return fullChatRequestDedupe.get(id);
+  }
+
   const type = getEntityTypeById(chat.id);
 
-  return type === 'channel'
+  const promise = type === 'channel'
     ? getFullChannelInfo(chat)
     : getFullChatInfo(id);
+
+  fullChatRequestDedupe.set(id, promise);
+
+  promise.finally(() => {
+    fullChatRequestDedupe.delete(id);
+  });
+
+  return promise;
 }
 
 export async function fetchPeerSettings(peer: ApiPeer) {
@@ -801,14 +814,15 @@ export function updateTopicMutedState({
 }
 
 export async function createChannel({
-  title, about = '', users,
+  title, about = '', users, isBroadcast, isMegagroup,
 }: {
-  title: string; about?: string; users?: ApiUser[];
+  title: string; about?: string; users?: ApiUser[]; isBroadcast?: true; isMegagroup?: true;
 }) {
   const result = await invokeRequest(new GramJs.channels.CreateChannel({
-    broadcast: true,
+    broadcast: isBroadcast,
     title,
     about,
+    megagroup: isMegagroup,
   }), {
     shouldThrow: true,
   });
diff --git a/src/assets/localization/fallback.strings b/src/assets/localization/fallback.strings
index 6581ca48e..0c34e2f00 100644
--- a/src/assets/localization/fallback.strings
+++ b/src/assets/localization/fallback.strings
@@ -1083,6 +1083,7 @@
 "ChannelPersmissionDeniedSendMessagesForever" = "The admins of this group have restricted your ability to send messages.";
 "ChannelPersmissionDeniedSendMessagesDefaultRestrictedText" = "Sending messages is not allowed in this group.";
 "Chats" = "Chats";
+"NewDiscussionChatTitle" = "{name} Chat";
 "FilterBots" = "Bots";
 "FilterContacts" = "Contacts";
 "FilterNonContacts" = "Non-Contacts";
@@ -1750,6 +1751,7 @@
 "ActionChangedTitleYou" = "You changed group name to «{title}»";
 "ActionChangedTitleChannel" = "Channel name was changed to «{title}»";
 "ActionCreatedChat" = "{from} created the group «{title}»";
+"ActionCreatedChatYou" = "You created the group «{title}»";
 "ActionCreatedChannel" = "Channel created";
 "ActionGameScore_one" = "{from} scored {count} in {game}";
 "ActionGameScore_other" = "{from} scored {count} in {game}";
diff --git a/src/components/left/main/ContactList.tsx b/src/components/left/main/ContactList.tsx
index faad291f4..552ed1584 100644
--- a/src/components/left/main/ContactList.tsx
+++ b/src/components/left/main/ContactList.tsx
@@ -76,7 +76,6 @@ const ContactList: FC<OwnProps & StateProps> = ({
           <ListItem
             key={id}
             className="chat-item-clickable contact-list-item"
-
             onClick={() => handleClick(id)}
           >
             <PrivateChatInfo
diff --git a/src/components/left/newChat/NewChatStep2.tsx b/src/components/left/newChat/NewChatStep2.tsx
index 21a8ade48..f31f8b45a 100644
--- a/src/components/left/newChat/NewChatStep2.tsx
+++ b/src/components/left/newChat/NewChatStep2.tsx
@@ -132,6 +132,7 @@ const NewChatStep2: FC<OwnProps & StateProps> = ({
       about,
       photo,
       memberIds,
+      isChannel: true,
     });
   }, [title, createChannel, about, photo, memberIds, channelTitleEmptyError]);
 
diff --git a/src/components/right/RightColumn.tsx b/src/components/right/RightColumn.tsx
index 776d1c48d..fea7b4aaf 100644
--- a/src/components/right/RightColumn.tsx
+++ b/src/components/right/RightColumn.tsx
@@ -182,6 +182,9 @@ const RightColumn: FC<OwnProps & StateProps> = ({
             setSelectedChatMemberId(undefined);
             setIsPromotedByCurrentUser(undefined);
             break;
+          case ManagementScreens.NewDiscussionGroup:
+            setManagementScreen(ManagementScreens.Discussion);
+            break;
           case ManagementScreens.ChatAdminRights:
           case ManagementScreens.ChatNewAdminRights:
           case ManagementScreens.GroupAddAdmins:
diff --git a/src/components/right/RightHeader.scss b/src/components/right/RightHeader.scss
index 4416121e1..d0f5ab550 100644
--- a/src/components/right/RightHeader.scss
+++ b/src/components/right/RightHeader.scss
@@ -23,7 +23,7 @@
 
   .title {
     margin-bottom: 0;
-    margin-left: 1.375rem;
+    margin-left: 1.1875rem;
     font-size: 1.25rem;
     font-weight: var(--font-weight-medium);
   }
diff --git a/src/components/right/RightHeader.tsx b/src/components/right/RightHeader.tsx
index f40d39467..9b6842ecb 100644
--- a/src/components/right/RightHeader.tsx
+++ b/src/components/right/RightHeader.tsx
@@ -136,6 +136,7 @@ enum HeaderContent {
   CreateTopic,
   EditTopic,
   SavedDialogs,
+  NewDiscussionGroup,
 }
 
 const RightHeader: FC<OwnProps & StateProps> = ({
@@ -318,6 +319,8 @@ const RightHeader: FC<OwnProps & StateProps> = ({
       HeaderContent.ManageInviteInfo
     ) : managementScreen === ManagementScreens.JoinRequests ? (
       HeaderContent.ManageJoinRequests
+    ) : managementScreen === ManagementScreens.NewDiscussionGroup ? (
+      HeaderContent.NewDiscussionGroup
     ) : undefined // Never reached
   ) : isStatistics ? (
     HeaderContent.Statistics
@@ -588,6 +591,8 @@ const RightHeader: FC<OwnProps & StateProps> = ({
             )}
           </>
         );
+      case HeaderContent.NewDiscussionGroup:
+        return <h3 className="title">{oldLang('NewGroup')}</h3>;
       default:
         return (
           <>
diff --git a/src/components/right/management/ManageDiscussion.tsx b/src/components/right/management/ManageDiscussion.tsx
index 39f3f285d..3877023ad 100644
--- a/src/components/right/management/ManageDiscussion.tsx
+++ b/src/components/right/management/ManageDiscussion.tsx
@@ -15,6 +15,7 @@ import renderText from '../../common/helpers/renderText';
 
 import useFlag from '../../../hooks/useFlag';
 import useHistoryBack from '../../../hooks/useHistoryBack';
+import useLastCallback from '../../../hooks/useLastCallback.ts';
 import useOldLang from '../../../hooks/useOldLang';
 
 import AnimatedIconWithPreview from '../../common/AnimatedIconWithPreview';
@@ -198,6 +199,10 @@ const ManageDiscussion: FC<OwnProps & StateProps> = ({
     );
   }
 
+  const handleNewGroupClick = useLastCallback(() => {
+    onScreenSelect(ManagementScreens.NewDiscussionGroup);
+  });
+
   function renderDiscussionGroups() {
     return (
       <div>
@@ -208,8 +213,10 @@ const ManageDiscussion: FC<OwnProps & StateProps> = ({
             key="create-group"
             icon="group"
             ripple
+            className="create-item"
+            withPrimaryColor
             teactOrderKey={0}
-            disabled
+            onClick={handleNewGroupClick}
           >
             {lang('DiscussionCreateGroup')}
           </ListItem>
@@ -219,7 +226,6 @@ const ManageDiscussion: FC<OwnProps & StateProps> = ({
                 key={id}
                 teactOrderKey={i + 1}
                 className="chat-item-clickable scroll-item"
-
                 onClick={() => {
                   onDiscussionClick(id);
                 }}
diff --git a/src/components/right/management/ManageInvites.tsx b/src/components/right/management/ManageInvites.tsx
index b33f1fbe3..4c8fa7db2 100644
--- a/src/components/right/management/ManageInvites.tsx
+++ b/src/components/right/management/ManageInvites.tsx
@@ -294,7 +294,7 @@ const ManageInvites: FC<OwnProps & StateProps> = ({
           </div>
         )}
         <div className="section" teactFastList>
-          <ListItem icon="add" withPrimaryColor key="create" className="create-link" onClick={handleCreateNewClick}>
+          <ListItem icon="add" withPrimaryColor key="create" className="create-item" onClick={handleCreateNewClick}>
             {oldLang('CreateNewLink')}
           </ListItem>
           {(!temporalInvites || !temporalInvites.length) && <NothingFound text="No links found" key="nothing" />}
diff --git a/src/components/right/management/Management.scss b/src/components/right/management/Management.scss
index bf3365bbd..72d3566cb 100644
--- a/src/components/right/management/Management.scss
+++ b/src/components/right/management/Management.scss
@@ -162,6 +162,13 @@
     }
   }
 
+  .create-item {
+    .icon-group {
+      margin-inline-start: 0.1875rem;
+      margin-inline-end: 1.1875rem;
+    }
+  }
+
   .Spinner {
     margin: 2rem auto;
   }
@@ -172,7 +179,7 @@
 }
 
 .ManageInvites {
-  .create-link {
+  .create-item {
     margin-bottom: 0.5rem;
     .icon-add {
       margin-inline-start: 0.1875rem;
diff --git a/src/components/right/management/Management.tsx b/src/components/right/management/Management.tsx
index 18a3be59f..75bde1d58 100644
--- a/src/components/right/management/Management.tsx
+++ b/src/components/right/management/Management.tsx
@@ -25,6 +25,7 @@ import ManageInvites from './ManageInvites';
 import ManageJoinRequests from './ManageJoinRequests';
 import ManageReactions from './ManageReactions';
 import ManageUser from './ManageUser';
+import NewDiscussionGroup from './NewDiscussionGroup.tsx';
 
 export type OwnProps = {
   chatId: string;
@@ -202,6 +203,16 @@ const Management: FC<OwnProps & StateProps> = ({
         />
       );
 
+    case ManagementScreens.NewDiscussionGroup:
+      return (
+        <NewDiscussionGroup
+          chatId={chatId}
+          onScreenSelect={onScreenSelect}
+          isActive={isActive}
+          onClose={onClose}
+        />
+      );
+
     case ManagementScreens.ChatNewAdminRights:
     case ManagementScreens.ChatAdminRights:
       return (
diff --git a/src/components/right/management/NewDiscussionGroup.tsx b/src/components/right/management/NewDiscussionGroup.tsx
new file mode 100644
index 000000000..861f31a4c
--- /dev/null
+++ b/src/components/right/management/NewDiscussionGroup.tsx
@@ -0,0 +1,142 @@
+import type { FC } from '../../../lib/teact/teact.ts';
+import { useState } from '../../../lib/teact/teact.ts';
+import React, { memo } from '../../../lib/teact/teact.ts';
+
+import type { ApiChat } from '../../../api/types/index.ts';
+import type { ManagementScreens } from '../../../types/index.ts';
+import { ChatCreationProgress } from '../../../types/index.ts';
+
+import { getActions, withGlobal } from '../../../global/index.ts';
+import { selectChat, selectTabState } from '../../../global/selectors/index.ts';
+
+import useHistoryBack from '../../../hooks/useHistoryBack.ts';
+import useLang from '../../../hooks/useLang.ts';
+import useLastCallback from '../../../hooks/useLastCallback.ts';
+
+import Icon from '../../common/icons/Icon.tsx';
+import AvatarEditable from '../../ui/AvatarEditable.tsx';
+import FloatingActionButton from '../../ui/FloatingActionButton.tsx';
+import InputText from '../../ui/InputText.tsx';
+import Spinner from '../../ui/Spinner.tsx';
+
+type OwnProps = {
+  chatId: string;
+  isActive: boolean;
+  onScreenSelect: (screen: ManagementScreens) => void;
+  onClose: NoneToVoidFunction;
+};
+
+type StateProps = {
+  chat?: ApiChat;
+  creationProgress?: ChatCreationProgress;
+  creationError?: string;
+};
+
+const NewDiscussionGroup: FC<OwnProps & StateProps> = ({
+  chat,
+  onClose,
+  isActive,
+  creationProgress,
+  creationError,
+}) => {
+  const { createChannel } = getActions();
+  const lang = useLang();
+
+  useHistoryBack({
+    isActive,
+    onBack: onClose,
+  });
+
+  const [title, setTitle] = useState(lang('NewDiscussionChatTitle', { name: chat?.title }));
+  const [photo, setPhoto] = useState<File | undefined>();
+  const [error, setError] = useState<string | undefined>();
+
+  const isLoading = creationProgress === ChatCreationProgress.InProgress;
+
+  const handleTitleChange = useLastCallback((e: React.ChangeEvent<HTMLInputElement>) => {
+    const { value } = e.currentTarget;
+    const newValue = value.trimStart();
+
+    setTitle(newValue);
+
+    if (newValue !== value) {
+      e.currentTarget.value = newValue;
+    }
+  });
+
+  const renderedError = (creationError && lang('NewChatTitleEmptyError')) || (
+    error !== lang('NewChatTitleEmptyError') && error !== lang('NewChannelTitleEmptyError')
+      ? error
+      : undefined
+  );
+
+  const handleCreateGroup = useLastCallback(() => {
+    if (!title.length) {
+      setError(lang('NewChatTitleEmptyError'));
+      return;
+    }
+    if (!chat) return;
+
+    createChannel({
+      discussionChannelId: chat.id,
+      title,
+      photo,
+      isSuperGroup: true,
+    });
+  });
+
+  return (
+    <div className="Management">
+      <div className="panel-content custom-scroll">
+        <div className="NewChat">
+          <div className="NewChat-inner step-2">
+            <AvatarEditable
+              onChange={setPhoto}
+              title={lang('AddPhoto')}
+            />
+            <InputText
+              value={title}
+              onChange={handleTitleChange}
+              label={lang('GroupName')}
+              error={error === lang('NewChatTitleEmptyError')
+                || error === lang('NewChannelTitleEmptyError') ? error : undefined}
+            />
+
+            {renderedError && (
+              <p className="error">{renderedError}</p>
+            )}
+          </div>
+
+          <FloatingActionButton
+            isShown={title.length !== 0}
+            onClick={handleCreateGroup}
+            disabled={isLoading}
+            ariaLabel={lang('DiscussionCreateGroup')}
+          >
+            {isLoading ? (
+              <Spinner color="white" />
+            ) : (
+              <Icon name="arrow-right" />
+            )}
+          </FloatingActionButton>
+        </div>
+      </div>
+    </div>
+  );
+};
+
+export default memo(withGlobal<OwnProps>(
+  (global, { chatId }): StateProps => {
+    const {
+      progress: creationProgress,
+      error: creationError,
+    } = selectTabState(global).chatCreation || {};
+    const chat = selectChat(global, chatId);
+
+    return {
+      chat,
+      creationProgress,
+      creationError,
+    };
+  },
+)(NewDiscussionGroup));
diff --git a/src/global/actions/api/chats.ts b/src/global/actions/api/chats.ts
index 8c59fe399..4974d0698 100644
--- a/src/global/actions/api/chats.ts
+++ b/src/global/actions/api/chats.ts
@@ -674,11 +674,12 @@ addActionHandler('updateTopicMutedState', (global, actions, payload): ActionRetu
 
 addActionHandler('createChannel', async (global, actions, payload): Promise<void> => {
   const {
-    title, about, photo, memberIds, tabId = getCurrentTabId(),
+    title, about, photo, memberIds, discussionChannelId, tabId = getCurrentTabId(),
   } = payload;
+  const isChannel = 'isChannel' in payload ? payload.isChannel : undefined;
+  const isSuperGroup = 'isSuperGroup' in payload ? payload.isSuperGroup : undefined;
 
-  const users = (memberIds)
-    .map((id) => selectUser(global, id))
+  const users = memberIds?.map((id) => selectUser(global, id))
     .filter(Boolean);
 
   global = updateTabState(global, {
@@ -691,7 +692,13 @@ addActionHandler('createChannel', async (global, actions, payload): Promise<void
   let createdChannel: ApiChat | undefined;
   let missingInvitedUsers: ApiMissingInvitedUser[] | undefined;
   try {
-    const result = await callApi('createChannel', { title, about, users });
+    const result = await callApi('createChannel', {
+      title,
+      about,
+      users,
+      isBroadcast: isChannel,
+      isMegagroup: isSuperGroup,
+    });
     createdChannel = result?.channel;
     missingInvitedUsers = result?.missingUsers;
   } catch (error) {
@@ -727,6 +734,13 @@ addActionHandler('createChannel', async (global, actions, payload): Promise<void
     },
   }, tabId);
   setGlobal(global);
+  if (discussionChannelId && channelId) {
+    actions.linkDiscussionGroup({
+      channelId: discussionChannelId,
+      chatId: channelId,
+      tabId,
+    });
+  }
   actions.openChat({ id: channelId, shouldReplaceHistory: true, tabId });
 
   if (missingInvitedUsers) {
diff --git a/src/global/types/actions.ts b/src/global/types/actions.ts
index 012ad25c2..b7d40aa4c 100644
--- a/src/global/types/actions.ts
+++ b/src/global/types/actions.ts
@@ -685,8 +685,11 @@ export interface ActionPayloads {
     title: string;
     about?: string;
     photo?: File;
-    memberIds: string[];
-  } & WithTabId;
+    memberIds?: string[];
+    discussionChannelId?: string;
+  } & (
+    { isChannel: true } | { isSuperGroup: true }
+  ) & WithTabId;
   createGroupChat: {
     title: string;
     memberIds: string[];
diff --git a/src/types/index.ts b/src/types/index.ts
index 76960eeac..ef38d342e 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -331,6 +331,7 @@ export enum RightColumnContent {
   CreateTopic,
   EditTopic,
   MonetizationStatistics,
+  NewGroup,
 }
 
 export type MediaViewerMedia = ApiPhoto | ApiVideo | ApiDocument;
@@ -502,6 +503,7 @@ export enum ManagementScreens {
   Reactions,
   InviteInfo,
   JoinRequests,
+  NewDiscussionGroup,
 }
 
 export type ManagementType = 'user' | 'group' | 'channel' | 'bot';
diff --git a/src/types/language.d.ts b/src/types/language.d.ts
index 0fa38024a..67e147d34 100644
--- a/src/types/language.d.ts
+++ b/src/types/language.d.ts
@@ -2483,6 +2483,9 @@ export interface LangPairWithVariables<V = LangVariable> {
   'ComposerTitleForwardFrom': {
     'users': V;
   };
+  'NewDiscussionChatTitle': {
+    'name': V;
+  }
 }
 
 export interface LangPairPlural {